I noticed that the black USB charger (40W) as opposed to the white (25W) doesn't have labels on each of the 5 USB ports as in the white one? any help?
4693
The white charger has a total of 25Watts available @ 5V (total current of 5A). Some devices require 1.1A, some 2.0A, etc. for them to charge at their quickest. The black charger is capable sensing the requirements of the charging device and producing the necessary output, hence it doesn't have dedicated ports. I've used this charger for my I-Phone 4 & 5, Samsung Galaxy 4S, I-Pad, Kindle Fire and a few off brand tablets. Works great with everything and since it has a total output 8A there is little chance that could ever plug in enough devices where they would not be able to charge at full speed The white charger has a total of 25Watts available @ 5V (total current of 5A). Some devices require 1.1A, some 2.0A, etc. for them to charge at their quickest. The black charger is capable sensing the requirements of the charging device and producing the necessary output, hence it doesn't have dedicated ports. I've used this charger for my I-Phone 4 & 5, Samsung Galaxy 4S, I-Pad, Kindle Fire and a few off brand tablets. Works great with everything and since it has a total output 8A there is little chance that could ever plug in enough devices where they would not be able to charge at full... » Read More The white charger has a total of 25Watts available @ 5V (total current of 5A). Some devices require 1.1A, some 2.0A, etc. for them to charge at their quickest. The black charger is capable sensing the requirements of the charging device and producing the necessary output, hence it doesn't have dedicated ports. I've used this charger for my I-Phone 4 & 5, Samsung Galaxy 4S, I-Pad, Kindle Fire and a few off brand tablets. Works great with everything and since it has a total output 8A there is little chance that could ever plug in enough devices where they would not be able to charge at full speed « Show Less
4694
My brief testing on this seems to indicate that the 5 ports on the 40W USB charger (which incidentally is now available in white, too) are all the same -- you can plug any device into any port. I have tested only with non-Apple devices, though.
4695
Easy. ianker.com (mfr) explains that the white model has ports that handle up to a max amperage but only that specific port. This is "smart" and will handle as much as the device asks for regardless of the port you pick. I have not seen a port max - they imply 8. Some devices must have a minimum amount so with the white model you had to pick the correct port when plugging in an iPad or it would not charge. I think this has a bit more future proofing than the white one so I'm getting it instead.
4696
The older models (without the PowerIQ) had specific power output per port so they were labeled as to which device each port supported (I have one of those). The newer model with PowerIQ is not only more powerful (40w), but each port senses how much juice it needs so there's no purpose in labeling any ports. Make sure you look at each model's specifications to determine whether it is old or new, the color doesn't matter.
884427
Yes, there's a dim blue light at the bottom of the charger when you're looking at the label. Most people miss it probably because it's dim and not on the face of the label. I hate super bright LED lights too. But a dim light on the same face as the USB ports is helpful.
1943365
I noticed that as well. My old one was heavy. New one light. So, probably a more updated "solid state" charger. Voltage output is a little higher than my old one.
1473695
This is likely due to the USB cable that you're using to charge. Different brands and lengths make a very significant difference in charging. Normally, the shorter the cable the better. Also, look for premium cables that have a higher wire gauge (AWG) rating (though this is often difficult to find). One more thing -- they changed models (of this monitor) over in January 2014, they are now black in color. The older white ones have a large amount of resistance and will also reduce the charging rate.
616867
Great question...I am sorry I don't know the answer though. Mine worked well for a couple months, and now like yours, mine also doesn't work ;( I also don't have the original packaging, but I do have the charger and my Amazon receipt. If you find out please let me know!! I ordered an Amazon USB cord to replace this one, since I can use the USB in both my car and on my PC. That cord works well too, however, even though it is certified, I still get an error periodically that it is an 'unsupported' device. Seems I can't win.
528809
The problem isn't the USB cable its the power adapter. I tested first using the one I have for my phone and it charged. Wound up picking up one for 10 dollars at Walmart. Just check the amps on any USB wall plug as long as its 1.5 amps or more should be fine
2156832
Hey, thanks for that info. I'm glad that I used this 'post' to get your input. My 'new' 4250 has 'shipped', just got the e-mail. I'll let you know if mine has the AC Wall Charger included in the box.Thanks, again, You made my day!!!
685725
I'm pretty sure either one will be the same. Most chargers like this are a parallel circuit so there is no number one port, per se. The ports output equal amps unless marked.
414586
I have been using these chargers for some time now with no issues. The back reads:4.8A, 24W Dual Port AC AdapterModel: L48WCInput: 100-240V~50/60Hz, 0.5 AOutput 1: 5V/2.4A (max)Output 2: 5V/2.4A (max)Then it has different symbols similiar toF(C (€ RoHS Compliant
1346746
I can't comment on this particular item. The wall charger I purchased was GTMAX Black Home Travel Charger. I have been using it since last Aug. with no problems. To charge my Sansa Clip 4GB.
1399304
Carefully look at pin config. in the illustration. Pin size etc. as compared to existing charger Carefully! The appear the same at 1st glance but there is a diff. Obvious when noticed
1650674
oh, and just in case you didn't notice it in the description, each USB port has an on/off switch. so if you get this item, just make sure your ports are in the on position before thinking that you have a defective item. Hope I've been helpful to you! :)
189196
Mine came with a wall charger but I don't see why it wouldn't work with a regular USB wall charger.
378129
If you're using this cable for an external hard drive it doesn't matter. However, the answer to your question is, yes, they are different. The black end is data and power, the white end is power only. There is marking embedded in the black and white plastic.
2282399
The two that I bought had kind of narrow power cube chargers with a USB connector. Much faster charging from line than from a computer (higher current). The charger will also charge any device with a USB plug.
270956
Didn't notice a UL sticker on back either, just as stated earlier only has a QC sticker. The material included states that it has six outlets rated to a cumulative total of 1875 watts and is equipped with a built in fuse T3.15A/250VAC - Also the USB circuits are equipped with an over-load protection and short-circuit protection
2012845
There is no different inside. The plastic colors are different. The "white" is white and red. The "black" is black and white. The only thing that is confusing is that the manual says that the WHITE side is the front. But on the white one, the RED side is the front. If you get the white one and follow the manual, it will fly backwards. There is one other really important error in the manual. The manual says that the charger lights RED for charging and GREEN for charge done. In the one that I got, the charger is RED when charge is done and not lit while charging.